Change-of-speed device for milling-machines.



W. H. OWEN.

PATBNTED SEPT. 26, 1905.

CHANGE 0F SPEED DEVICE FOR MILLING MACHINES.

`APPLICATION FILED FEB. 29. 1904.

2 SHEETS-SHEET l.

SUV/Limena 28 o .9/ c a 27 f/wm@ h? J', 8, ,/m C) No. 800,238. PATBNTBDSBPT. 20, 1905.`

yW. H. 0WEN.

CHANGE OP SPEED DEVICE FOR MILLING MACHINES. I

APPLIOATION FILED PEB. 20, 1004.

2 SHEETS-SHEET 2.

UNITED STATES .PATENT OFFIOE.

WILLIAM H. OWEN, OF SPRINGFIELD, OHIO, AssIGNORl TO THE OWEN MACHINE 'IOOLOOMFANIL OF SPRINGFIELD, OHIO, A CORPORATION OF 'wEsT VIRGINIA.

CHANGE-oF-SPEED DEVICE FOB MILLiNG-MACHINE'S'.

10 all whom it may concern: Y

Beit known that LWILLIAM H. OWEN, acitizen of thev United States, residing at Springfield, in the county of Clark and State of Ohio,

. My invention relates to improvements in a milling-machine.

My object is to devise improved connections for the speed device used for'regulating changes of speed in the feed of the machine. i

the cone-pulley of thel machine to the table which dispense with the complicated connections heretofore used and provide for a multiplicity of changes of speed. v

In the drawings, Figure l is a sectional view showing the connection between the Figs. 2 and 3 are for change of speed of the speed device.

Like letters of reference indicatelike parts throughout the several views.

- guides D, so that in its vertical'movement it is guidedby means of the guides DQ Thetable which supports thearticle to be'milled is supported by the knee C land is lettered E.

The shaft of the machine for operating the cutting-tool is indicated by a, Fig. l.' The shaft a at one end is formed witha reduced section c, and there is journaled loosely on said section afasleeve lathrough which power is transmitted. At the outer end of the reduced section athere isrigidly placed on said sleeve a sprocket-wheel c7, whichrotates with said sleeve. Thesprocket-wheel is geared by a sprocketchain as to a sprocket wheel e9, which is formed rigid with a sleeve al", which sleeve am is keyed on an inner sleeve a, which is journaled loosely on the stub-shaft 012.l

Said inner sleeve a. is geared tora gear a, which is keyed on the shaft 015, as lindicated at al in Fig. 2. Said shaft@15 is journaled'in Specification of Letters Patent.

Application led February 29, 1904:. Serial No. 195,733. l

My particular improvement consists'in a` lseries of clutches andy gearsV connected from Patented Sept. 26, 1905.

bearings in the frame of the machine, and there is journaled loosely thereon near the opposite end of the shaft from the gear a two gears al? and als, and formed between these f glears is a clutch member al, keyed to said shaft a; either of said gears and is shown so formed that when it is thrown to the right it will en-4 gage the gear c y'and when thrown to the left it will engage the gear 61,18. The gear a is Said clutch member isvformed to engageshown in the machine in mesh with an intermediate gear w20, formed rigid on the stubshaft C023. This intermediate gear is in mesh with an upper gear a. The gear alsgears with an intermediate gear w21, which isshown in mesh with an upper gearazz. Between the two gears L22 and a there is shown a clutch member 0:25, which is keyed to 'the-'shaft a2, on which shaft are journaled loosely the gears @wand a. The gear a is shown larger in diameter than thev gear a, which is a comparatively small gear; but als gears with am, which is a large vgear-wheel keyed on said shaft w23, and w21 in turn gears with a small gearwheel ci. of large diameter is adapted to gear with a gear ay, keyed on the shaft 0023, which shaft has the gear @2 journaled thereon, which in turn gears with a large gear azi. By this arrangement when the clutch member al is thrown to the right there will be an entirely' diierent speed transmitted than when the clutch member tw is thrown to the left. By the arrange- On the other hand, a being a gear.

ment of the upper gear and the clutch memloerv @25 the changes of lspeed are clearly shown to be multiplied, for the speed ofthe shaft 426 will be varied by throwing the clutch member @25 to the right Or left. Said shaft w23 is journaled loosely in bearings in the frame of the machine and is rotated by either gear w20. or C021. The operator of the machine may throw the clutch members ctw-anda,25 simultaneously, or one may be thrown to the right and the other to the left, and in this way the change of speed-is varied. On the opposite end of the shaft w26 from the endy where the clutch member c25 is located there is-splined on said shaft another clutch w31, which is adapted to gear with either of the bevel-gears w27 lor w28.' y `to the right, the shaft L27 being in mesh with the corresponding gear member co2, which gear member is formed rigid with the shaft a3", ro-

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When the clutch member asl is thrown. I l

tates said shaft c3 in one direction, and when the clutch member ai is thrown to the left said shaft a2, through the gear @2S and the corresponding gear member a2, rotates the shaft @3 in the opposite direction. Near the lower end of said shaft L30 is formed a gear member 432, rigid with said shaft, and this gear member @32 meshes with a corresponding gear member @33, which is keyed on the shaft c3". Said shaft c3* extends through bearings formed in the frame A, and near the end opposite from the gears al and @33 there are loosely journaled on said shaft a series of gearwlieels. At the eXtreme opposite end from said gear members am and ci there is a seeond series of gear-wheels, and between these two series of gear-wheels there is formed a clutch member 635, which is keyed on the shaft am. Said clutch member is formed with teeth on the outersurface or periphery,(marled 6036,) and on the end surfaces of said clutch member there are formed gear-teeth au. l/Vhen the clutch member L35 is thrown to the right, the teeth L36 on the outer' periphery of the clutch member are adapted to engage two teeth formed on the inner surface of the gear member 037,which gear member is journaled loosely on a sleeve projecting from the inner gear member c3, which gear member in turn is journaled loosely on the shaft c3". When the clutch member 035 is thrown to the left, the teeth dson the outer periphery of said clutch member are adapted to engage with two teeth on the inner surface of the gear member (03S, which is journaled loosely on the sleeve projecting from the inner gear member 0,40, which gear member in turn is journaled loosely on the shaft csf. rI he gear members am and css are shown in mesh with gears formed rigid on the shaft am, and the gear members a3" and am are also shown in mesh with gears rigid on said shaft am. The inner gear is indicated by 053. 1t will be noticed that the gear members L37 and a3, L38 and at are shown of varying sizes, so that there is a change of speed transmitted to the shaft a, depending on which gear member the clutch member @35 gears with. In order to cause the clutch member w35 to gear with the inner gears da" and am, itis necessary to throw the clutch member @35 to the eXtreme of its right or left movement, and when this is done the teeth fr mesh with teeth formed on the end surfaces of said inner gear, and the teeth on the inner surfaces of the gear members L37 and @3s are adapted to extend within the spaces formed between the teeth on the outer surface of said clutch ai.

There is the usual connection between the shaft a5* and the device to be operated or moved.

Any usual lever, such as c, may be employed for throwing the clutch member in Fig. 2, (indicated by the reference character @35.) When the lever is thrown in one direction, theclutch member @35 will be in gear with the gear member @37, and when the lever ai is further thrownin the same direction the clutch member d3" will be in gear with the gear member fff", and in the same manner when the lever is thrown in the other direction the clutch member @35 will be thrown into gear with the gear members a and 10"". Levers for clutch member ci" may also be employed.

AIn Figs. 2 and 3 l have shown the connecting mechanism between the lever d and the clutch am). The lever operates the shaft ff, having a hub a", which gears with the rack 0,4". The clutch-arm a. is connected to said rack.

Having thus described my invention, l claimH l. In a milling-machine, a change-of-specd device consisting of a clutch member with all its surfaces formed with spurs or teeth, and gears located opposite to each end of said clutch member, and means for causing the teeth on said gears to engage teeth on diii'erent surfaces of said clutch member.

2. In a milling-machine, a change-of-spmid device consisting of a cylindrical clutch member having teeth on its end surfaces and on its peripheral surfaces, a plurality of gears, some of which are adapted to engage with the teeth on the end surfaces and seme adapted to engage with the teeth on the periphery of said clutch member.

3. ln a milling-machisae, a chauge-of-specd device consisting of a clutch member, a plurality of gears opposite one end of said clutch member consisting of an outer and inner gear, teeth formed on the inner surface of said outer gear and on the end su rfacc of said inner gear, and means for causing' the clutch member to engage with the teeth of said outer gear when thrown into one position and with the teeth of the inner gear when thrown au additional distance.

4. ln a milling-machine, a clutch member with teeth formed on all its surfaces, means for throwing said clutch member to the right and to the left, a plurality of gears opposite each end of said clutch member consisting of outer and inner gears, teeth formed on the inner surface of the outer gear and on the end surface of the inner gear, said teeth on said outer gear being adapted to pass within the spaces formed between the teeth on theouter surface of the clutch member when the teeth on the end surface of said clutch member engage with the teeth on the end of said inner gear, for the purpose specified.

In testimony whereof l have hercun to set my hand this 25th day of February, A. I). .19d-L.

VVILLlAM H. OW EN ivitnesses:

CHAs. I. WELCH, CLIFTON P. GRANT.

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